On 3 December 2014 at 07:23, Bhuvanesh <bhuvanesh_surachari@xxxxxxxxxx> wrote:
> Hi,
>
> Thanks for guiding. I read through Documentation/SubmittingPatches.
> Fixed the warnings given by checkpatch. Kindly review the updated patch.
Could you also resend it as a separate patch, not replying to this email thread.
Kind regards
Uffe
>
> From 7ea020e32e1fbe4d05d104e31815d908af92f2a5 Mon Sep 17 00:00:00 2001
> From: Bhuvanesh Surachari <bhuvanesh_surachari@xxxxxxxxxx>
> Date: Mon, 1 Dec 2014 02:23:02 -0500
> Subject: [PATCH] mmc: queue:Improve error handling during allocation of
> bounce buffers.
>
> Allocation of previous bounce buffer in mmc_init_queue when the current
> bounce buffer allocation fails was leading to a crash later in
> __blk_segment_map_sg. Error handling is improved by allocating previous
> bounce buffer only if the current bounce buffer allocation succeeds.
>
> Signed-off-by: Bhuvanesh Surachari <bhuvanesh_surachari@xxxxxxxxxx>
> Signed-off-by: Harish Jenny K N <harish_kandiga@xxxxxxxxxx>
> ---
> drivers/mmc/card/queue.c | 16 +++++++++-------
> 1 file changed, 9 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
> index cfa6110..236d194 100644
> --- a/drivers/mmc/card/queue.c
> +++ b/drivers/mmc/card/queue.c
> @@ -232,13 +232,15 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
> if (!mqrq_cur->bounce_buf) {
> pr_warn("%s: unable to allocate bounce cur buffer\n",
> mmc_card_name(card));
> - }
> - mqrq_prev->bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
> - if (!mqrq_prev->bounce_buf) {
> - pr_warn("%s: unable to allocate bounce prev buffer\n",
> - mmc_card_name(card));
> - kfree(mqrq_cur->bounce_buf);
> - mqrq_cur->bounce_buf = NULL;
> + } else {
> + mqrq_prev->bounce_buf =
> + kmalloc(bouncesz, GFP_KERNEL);
> + if (!mqrq_prev->bounce_buf) {
> + pr_warn("%s: unable to allocate bounce prev buffer\n",
> + mmc_card_name(card));
> + kfree(mqrq_cur->bounce_buf);
> + mqrq_cur->bounce_buf = NULL;
> + }
> }
> }
>
> --
> 1.7.9.5
>
>
>
> Thank you,
> Regards,
> Bhuvanesh
>
> On 12/02/2014 05:01 PM, Ulf Hansson wrote:
>> On 1 December 2014 at 12:56, Bhuvanesh <bhuvanesh_surachari@xxxxxxxxxx> wrote:
>>> Hi,
>>>
>>> Please find the patch inline.
>>
>> Apparently you didn't read /Documentation/SubmittingPatches.
>>
>> If you want me to review, please follow that guide. For example, I
>> expect you to run checkpatch.
>>
>> Kind regards
>> Uffe
>>
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